1119 lines
42 KiB
C++
1119 lines
42 KiB
C++
/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2019 Cppcheck team.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "cppcheckexecutor.h"
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#include "analyzerinfo.h"
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#include "cmdlineparser.h"
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#include "config.h"
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#include "cppcheck.h"
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#include "filelister.h"
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#include "importproject.h"
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#include "library.h"
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#include "path.h"
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#include "pathmatch.h"
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#include "preprocessor.h"
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#include "settings.h"
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#include "standards.h"
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#include "suppressions.h"
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#include "threadexecutor.h"
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#include "utils.h"
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#include "checkunusedfunctions.h"
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#include <csignal>
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#include <cstdio>
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#include <cstdlib> // EXIT_SUCCESS and EXIT_FAILURE
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#include <cstring>
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#include <iostream>
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#include <list>
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#include <utility>
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#include <vector>
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#if !defined(NO_UNIX_SIGNAL_HANDLING) && defined(__GNUC__) && !defined(__MINGW32__) && !defined(__OS2__)
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#define USE_UNIX_SIGNAL_HANDLING
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#include <unistd.h>
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#if defined(__APPLE__)
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# define _XOPEN_SOURCE // ucontext.h APIs can only be used on Mac OSX >= 10.7 if _XOPEN_SOURCE is defined
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# include <ucontext.h>
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# undef _XOPEN_SOURCE
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#elif !defined(__OpenBSD__)
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# include <ucontext.h>
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#endif
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#ifdef __linux__
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#include <sys/syscall.h>
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#include <sys/types.h>
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#endif
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#endif
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#if !defined(NO_UNIX_BACKTRACE_SUPPORT) && defined(USE_UNIX_SIGNAL_HANDLING) && defined(__GNUC__) && defined(__GLIBC__) && !defined(__CYGWIN__) && !defined(__MINGW32__) && !defined(__NetBSD__) && !defined(__SVR4) && !defined(__QNX__)
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#define USE_UNIX_BACKTRACE_SUPPORT
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#include <cxxabi.h>
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#include <execinfo.h>
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#endif
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#if defined(_MSC_VER)
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#define USE_WINDOWS_SEH
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#include <DbgHelp.h>
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#include <TCHAR.H>
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#include <Windows.h>
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#include <excpt.h>
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#endif
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/*static*/ FILE* CppCheckExecutor::mExceptionOutput = stdout;
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CppCheckExecutor::CppCheckExecutor()
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: mSettings(nullptr), mLatestProgressOutputTime(0), mErrorOutput(nullptr), mShowAllErrors(false)
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{
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}
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CppCheckExecutor::~CppCheckExecutor()
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{
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delete mErrorOutput;
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}
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bool CppCheckExecutor::parseFromArgs(CppCheck *cppcheck, int argc, const char* const argv[])
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{
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Settings& settings = cppcheck->settings();
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CmdLineParser parser(&settings);
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const bool success = parser.parseFromArgs(argc, argv);
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if (success) {
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if (parser.getShowVersion() && !parser.getShowErrorMessages()) {
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const char * const extraVersion = CppCheck::extraVersion();
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if (*extraVersion != 0)
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std::cout << "Cppcheck " << CppCheck::version() << " ("
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<< extraVersion << ')' << std::endl;
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else
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std::cout << "Cppcheck " << CppCheck::version() << std::endl;
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}
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if (parser.getShowErrorMessages()) {
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mShowAllErrors = true;
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std::cout << ErrorLogger::ErrorMessage::getXMLHeader();
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cppcheck->getErrorMessages();
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std::cout << ErrorLogger::ErrorMessage::getXMLFooter() << std::endl;
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}
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if (parser.exitAfterPrinting()) {
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Settings::terminate();
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return true;
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}
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} else {
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return false;
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}
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// Check that all include paths exist
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{
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for (std::list<std::string>::iterator iter = settings.includePaths.begin();
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iter != settings.includePaths.end();
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) {
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const std::string path(Path::toNativeSeparators(*iter));
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if (FileLister::isDirectory(path))
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++iter;
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else {
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// If the include path is not found, warn user and remove the non-existing path from the list.
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if (settings.isEnabled(Settings::INFORMATION))
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std::cout << "(information) Couldn't find path given by -I '" << path << '\'' << std::endl;
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iter = settings.includePaths.erase(iter);
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}
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}
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}
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// Output a warning for the user if he tries to exclude headers
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bool warn = false;
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const std::vector<std::string>& ignored = parser.getIgnoredPaths();
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for (const std::string &i : ignored) {
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if (Path::isHeader(i)) {
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warn = true;
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break;
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}
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}
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if (warn) {
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std::cout << "cppcheck: filename exclusion does not apply to header (.h and .hpp) files." << std::endl;
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std::cout << "cppcheck: Please use --suppress for ignoring results from the header files." << std::endl;
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}
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const std::vector<std::string>& pathnames = parser.getPathNames();
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#if defined(_WIN32)
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// For Windows we want case-insensitive path matching
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const bool caseSensitive = false;
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#else
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const bool caseSensitive = true;
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#endif
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if (!pathnames.empty()) {
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// Execute recursiveAddFiles() to each given file parameter
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const PathMatch matcher(ignored, caseSensitive);
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for (const std::string &pathname : pathnames)
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FileLister::recursiveAddFiles(mFiles, Path::toNativeSeparators(pathname), mSettings->library.markupExtensions(), matcher);
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}
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if (mFiles.empty() && settings.project.fileSettings.empty()) {
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std::cout << "cppcheck: error: could not find or open any of the paths given." << std::endl;
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if (!ignored.empty())
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std::cout << "cppcheck: Maybe all paths were ignored?" << std::endl;
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return false;
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}
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return true;
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}
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int CppCheckExecutor::check(int argc, const char* const argv[])
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{
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Preprocessor::missingIncludeFlag = false;
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Preprocessor::missingSystemIncludeFlag = false;
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CheckUnusedFunctions::clear();
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CppCheck cppCheck(*this, true);
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const Settings& settings = cppCheck.settings();
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mSettings = &settings;
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if (!parseFromArgs(&cppCheck, argc, argv)) {
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return EXIT_FAILURE;
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}
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if (Settings::terminated()) {
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return EXIT_SUCCESS;
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}
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if (cppCheck.settings().exceptionHandling) {
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return check_wrapper(cppCheck, argc, argv);
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}
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return check_internal(cppCheck, argc, argv);
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}
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void CppCheckExecutor::setSettings(const Settings &settings)
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{
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mSettings = &settings;
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}
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/**
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* Simple helper function:
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* \return size of array
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* */
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template<typename T, int size>
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std::size_t getArrayLength(const T(&)[size])
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{
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return size;
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}
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#if defined(USE_UNIX_SIGNAL_HANDLING)
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/*
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* Try to print the callstack.
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* That is very sensitive to the operating system, hardware, compiler and runtime.
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* The code is not meant for production environment!
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* One reason is named first: it's using functions not whitelisted for usage in a signal handler function.
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*/
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static void print_stacktrace(FILE* output, bool demangling, int maxdepth, bool lowMem)
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{
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#if defined(USE_UNIX_BACKTRACE_SUPPORT)
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// 32 vs. 64bit
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#define ADDRESSDISPLAYLENGTH ((sizeof(long)==8)?12:8)
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const int fd = fileno(output);
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void *callstackArray[32]= {nullptr}; // the less resources the better...
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const int currentdepth = backtrace(callstackArray, (int)getArrayLength(callstackArray));
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const int offset=2; // some entries on top are within our own exception handling code or libc
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if (maxdepth<0)
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maxdepth=currentdepth-offset;
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else
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maxdepth = std::min(maxdepth, currentdepth);
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if (lowMem) {
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fputs("Callstack (symbols only):\n", output);
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backtrace_symbols_fd(callstackArray+offset, maxdepth, fd);
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} else {
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char **symbolStringList = backtrace_symbols(callstackArray, currentdepth);
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if (symbolStringList) {
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fputs("Callstack:\n", output);
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for (int i = offset; i < maxdepth; ++i) {
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const char * const symbolString = symbolStringList[i];
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char * realnameString = nullptr;
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const char * const firstBracketName = strchr(symbolString, '(');
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const char * const firstBracketAddress = strchr(symbolString, '[');
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const char * const secondBracketAddress = strchr(firstBracketAddress, ']');
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const char * const beginAddress = firstBracketAddress+3;
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const int addressLen = int(secondBracketAddress-beginAddress);
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const int padLen = int(ADDRESSDISPLAYLENGTH-addressLen);
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if (demangling && firstBracketName) {
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const char * const plus = strchr(firstBracketName, '+');
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if (plus && (plus>(firstBracketName+1))) {
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char input_buffer[1024]= {0};
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strncpy(input_buffer, firstBracketName+1, plus-firstBracketName-1);
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char output_buffer[2048]= {0};
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size_t length = getArrayLength(output_buffer);
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int status=0;
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// We're violating the specification - passing stack address instead of malloc'ed heap.
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// Benefit is that no further heap is required, while there is sufficient stack...
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realnameString = abi::__cxa_demangle(input_buffer, output_buffer, &length, &status); // non-NULL on success
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}
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}
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const int ordinal=i-offset;
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fprintf(output, "#%-2d 0x",
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ordinal);
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if (padLen>0)
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fprintf(output, "%0*d",
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padLen, 0);
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if (realnameString) {
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fprintf(output, "%.*s in %s\n",
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(int)(secondBracketAddress-firstBracketAddress-3), firstBracketAddress+3,
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realnameString);
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} else {
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fprintf(output, "%.*s in %.*s\n",
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(int)(secondBracketAddress-firstBracketAddress-3), firstBracketAddress+3,
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(int)(firstBracketAddress-symbolString), symbolString);
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}
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}
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free(symbolStringList);
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} else {
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fputs("Callstack could not be obtained\n", output);
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}
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}
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#undef ADDRESSDISPLAYLENGTH
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#else
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UNUSED(output);
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UNUSED(demangling);
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UNUSED(maxdepth);
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UNUSED(lowMem);
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#endif
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}
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static const size_t MYSTACKSIZE = 16*1024+SIGSTKSZ; // wild guess about a reasonable buffer
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static char mytstack[MYSTACKSIZE]= {0}; // alternative stack for signal handler
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static bool bStackBelowHeap=false; // lame attempt to locate heap vs. stack address space. See CppCheckExecutor::check_wrapper()
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/**
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* \param[in] ptr address to be examined.
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* \return true if address is supposed to be on stack (contrary to heap). If ptr is 0 false will be returned.
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* If unknown better return false.
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*/
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static bool IsAddressOnStack(const void* ptr)
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{
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if (nullptr==ptr)
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return false;
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char a;
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if (bStackBelowHeap)
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return ptr < &a;
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else
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return ptr > &a;
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}
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/* (declare this list here, so it may be used in signal handlers in addition to main())
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* A list of signals available in ISO C
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* Check out http://pubs.opengroup.org/onlinepubs/009695399/basedefs/signal.h.html
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* For now we only want to detect abnormal behaviour for a few selected signals:
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*/
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#define DECLARE_SIGNAL(x) std::make_pair(x, #x)
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typedef std::map<int, std::string> Signalmap_t;
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static const Signalmap_t listofsignals = {
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DECLARE_SIGNAL(SIGABRT),
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DECLARE_SIGNAL(SIGBUS),
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DECLARE_SIGNAL(SIGFPE),
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DECLARE_SIGNAL(SIGILL),
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DECLARE_SIGNAL(SIGINT),
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DECLARE_SIGNAL(SIGQUIT),
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DECLARE_SIGNAL(SIGSEGV),
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DECLARE_SIGNAL(SIGSYS),
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// don't care: SIGTERM
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DECLARE_SIGNAL(SIGUSR1),
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//DECLARE_SIGNAL(SIGUSR2) no usage currently
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};
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#undef DECLARE_SIGNAL
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/*
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* Entry pointer for signal handlers
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* It uses functions which are not safe to be called from a signal handler,
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* (http://pubs.opengroup.org/onlinepubs/9699919799/functions/V2_chap02.html#tag_15_04 has a whitelist)
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* but when ending up here something went terribly wrong anyway.
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* And all which is left is just printing some information and terminate.
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*/
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static void CppcheckSignalHandler(int signo, siginfo_t * info, void * context)
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{
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int type = -1;
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pid_t killid;
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#if defined(__linux__) && defined(REG_ERR)
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const ucontext_t* const uc = reinterpret_cast<const ucontext_t*>(context);
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killid = (pid_t) syscall(SYS_gettid);
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if (uc) {
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type = (int)uc->uc_mcontext.gregs[REG_ERR] & 2;
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}
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#else
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UNUSED(context);
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killid = getpid();
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#endif
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const Signalmap_t::const_iterator it=listofsignals.find(signo);
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const char * const signame = (it==listofsignals.end()) ? "unknown" : it->second.c_str();
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bool printCallstack=true; // try to print a callstack?
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bool lowMem=false; // was low-memory condition detected? Be careful then! Avoid allocating much more memory then.
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bool unexpectedSignal=true; // unexpected indicates program failure
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bool terminate=true; // exit process/thread
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const bool isAddressOnStack = IsAddressOnStack(info->si_addr);
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FILE* output = CppCheckExecutor::getExceptionOutput();
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switch (signo) {
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case SIGABRT:
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fputs("Internal error: cppcheck received signal ", output);
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fputs(signame, output);
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fputs(
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#ifdef NDEBUG
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" - out of memory?\n",
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#else
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" - out of memory or assertion?\n",
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#endif
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output);
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lowMem=true; // educated guess
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break;
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case SIGBUS:
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fputs("Internal error: cppcheck received signal ", output);
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fputs(signame, output);
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switch (info->si_code) {
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case BUS_ADRALN: // invalid address alignment
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fputs(" - BUS_ADRALN", output);
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break;
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case BUS_ADRERR: // nonexistent physical address
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fputs(" - BUS_ADRERR", output);
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break;
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case BUS_OBJERR: // object-specific hardware error
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fputs(" - BUS_OBJERR", output);
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break;
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#ifdef BUS_MCEERR_AR
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case BUS_MCEERR_AR: // Hardware memory error consumed on a machine check;
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fputs(" - BUS_MCEERR_AR", output);
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break;
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#endif
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#ifdef BUS_MCEERR_AO
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case BUS_MCEERR_AO: // Hardware memory error detected in process but not consumed
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fputs(" - BUS_MCEERR_AO", output);
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break;
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#endif
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default:
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break;
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}
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fprintf(output, " (at 0x%lx).\n",
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(unsigned long)info->si_addr);
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break;
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case SIGFPE:
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fputs("Internal error: cppcheck received signal ", output);
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fputs(signame, output);
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switch (info->si_code) {
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case FPE_INTDIV: // integer divide by zero
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fputs(" - FPE_INTDIV", output);
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break;
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case FPE_INTOVF: // integer overflow
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fputs(" - FPE_INTOVF", output);
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break;
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case FPE_FLTDIV: // floating-point divide by zero
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fputs(" - FPE_FLTDIV", output);
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break;
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case FPE_FLTOVF: // floating-point overflow
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fputs(" - FPE_FLTOVF", output);
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break;
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case FPE_FLTUND: // floating-point underflow
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fputs(" - FPE_FLTUND", output);
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break;
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case FPE_FLTRES: // floating-point inexact result
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fputs(" - FPE_FLTRES", output);
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break;
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case FPE_FLTINV: // floating-point invalid operation
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fputs(" - FPE_FLTINV", output);
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break;
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case FPE_FLTSUB: // subscript out of range
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fputs(" - FPE_FLTSUB", output);
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break;
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default:
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break;
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}
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fprintf(output, " (at 0x%lx).\n",
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(unsigned long)info->si_addr);
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break;
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case SIGILL:
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fputs("Internal error: cppcheck received signal ", output);
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fputs(signame, output);
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switch (info->si_code) {
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case ILL_ILLOPC: // illegal opcode
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fputs(" - ILL_ILLOPC", output);
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break;
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case ILL_ILLOPN: // illegal operand
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fputs(" - ILL_ILLOPN", output);
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break;
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case ILL_ILLADR: // illegal addressing mode
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fputs(" - ILL_ILLADR", output);
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break;
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case ILL_ILLTRP: // illegal trap
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fputs(" - ILL_ILLTRP", output);
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break;
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case ILL_PRVOPC: // privileged opcode
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fputs(" - ILL_PRVOPC", output);
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break;
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case ILL_PRVREG: // privileged register
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fputs(" - ILL_PRVREG", output);
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break;
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case ILL_COPROC: // coprocessor error
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fputs(" - ILL_COPROC", output);
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break;
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case ILL_BADSTK: // internal stack error
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fputs(" - ILL_BADSTK", output);
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break;
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default:
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break;
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}
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fprintf(output, " (at 0x%lx).%s\n",
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(unsigned long)info->si_addr,
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(isAddressOnStack)?" Stackoverflow?":"");
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break;
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case SIGINT:
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unexpectedSignal=false; // legal usage: interrupt application via CTRL-C
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fputs("cppcheck received signal ", output);
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fputs(signame, output);
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printCallstack=true;
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fputs(".\n", output);
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break;
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case SIGSEGV:
|
|
fputs("Internal error: cppcheck received signal ", output);
|
|
fputs(signame, output);
|
|
switch (info->si_code) {
|
|
case SEGV_MAPERR: // address not mapped to object
|
|
fputs(" - SEGV_MAPERR", output);
|
|
break;
|
|
case SEGV_ACCERR: // invalid permissions for mapped object
|
|
fputs(" - SEGV_ACCERR", output);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
fprintf(output, " (%sat 0x%lx).%s\n",
|
|
// cppcheck-suppress knownConditionTrueFalse ; FP
|
|
(type==-1)? "" :
|
|
(type==0) ? "reading " : "writing ",
|
|
(unsigned long)info->si_addr,
|
|
(isAddressOnStack)?" Stackoverflow?":""
|
|
);
|
|
break;
|
|
case SIGUSR1:
|
|
fputs("cppcheck received signal ", output);
|
|
fputs(signame, output);
|
|
fputs(".\n", output);
|
|
terminate=false;
|
|
break;
|
|
default:
|
|
fputs("Internal error: cppcheck received signal ", output);
|
|
fputs(signame, output);
|
|
fputs(".\n", output);
|
|
break;
|
|
}
|
|
if (printCallstack) {
|
|
print_stacktrace(output, true, -1, lowMem);
|
|
}
|
|
if (unexpectedSignal) {
|
|
fputs("\nPlease report this to the cppcheck developers!\n", output);
|
|
}
|
|
fflush(output);
|
|
|
|
if (terminate) {
|
|
// now let things proceed, shutdown and hopefully dump core for post-mortem analysis
|
|
struct sigaction act;
|
|
memset(&act, 0, sizeof(act));
|
|
act.sa_handler=SIG_DFL;
|
|
sigaction(signo, &act, nullptr);
|
|
kill(killid, signo);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef USE_WINDOWS_SEH
|
|
namespace {
|
|
const ULONG maxnamelength = 512;
|
|
struct IMAGEHLP_SYMBOL64_EXT : public IMAGEHLP_SYMBOL64 {
|
|
TCHAR nameExt[maxnamelength]; // actually no need to worry about character encoding here
|
|
};
|
|
typedef BOOL (WINAPI *fpStackWalk64)(DWORD, HANDLE, HANDLE, LPSTACKFRAME64, PVOID, PREAD_PROCESS_MEMORY_ROUTINE64, PFUNCTION_TABLE_ACCESS_ROUTINE64, PGET_MODULE_BASE_ROUTINE64, PTRANSLATE_ADDRESS_ROUTINE64);
|
|
fpStackWalk64 pStackWalk64;
|
|
typedef DWORD64(WINAPI *fpSymGetModuleBase64)(HANDLE, DWORD64);
|
|
fpSymGetModuleBase64 pSymGetModuleBase64;
|
|
typedef BOOL (WINAPI *fpSymGetSymFromAddr64)(HANDLE, DWORD64, PDWORD64, PIMAGEHLP_SYMBOL64);
|
|
fpSymGetSymFromAddr64 pSymGetSymFromAddr64;
|
|
typedef BOOL (WINAPI *fpSymGetLineFromAddr64)(HANDLE, DWORD64, PDWORD, PIMAGEHLP_LINE64);
|
|
fpSymGetLineFromAddr64 pSymGetLineFromAddr64;
|
|
typedef DWORD (WINAPI *fpUnDecorateSymbolName)(const TCHAR*, PTSTR, DWORD, DWORD) ;
|
|
fpUnDecorateSymbolName pUnDecorateSymbolName;
|
|
typedef PVOID(WINAPI *fpSymFunctionTableAccess64)(HANDLE, DWORD64);
|
|
fpSymFunctionTableAccess64 pSymFunctionTableAccess64;
|
|
typedef BOOL (WINAPI *fpSymInitialize)(HANDLE, PCSTR, BOOL);
|
|
fpSymInitialize pSymInitialize;
|
|
|
|
HMODULE hLibDbgHelp;
|
|
// avoid explicit dependency on Dbghelp.dll
|
|
bool loadDbgHelp()
|
|
{
|
|
hLibDbgHelp = ::LoadLibraryW(L"Dbghelp.dll");
|
|
if (!hLibDbgHelp)
|
|
return false;
|
|
pStackWalk64 = (fpStackWalk64) ::GetProcAddress(hLibDbgHelp, "StackWalk64");
|
|
pSymGetModuleBase64 = (fpSymGetModuleBase64) ::GetProcAddress(hLibDbgHelp, "SymGetModuleBase64");
|
|
pSymGetSymFromAddr64 = (fpSymGetSymFromAddr64) ::GetProcAddress(hLibDbgHelp, "SymGetSymFromAddr64");
|
|
pSymGetLineFromAddr64 = (fpSymGetLineFromAddr64)::GetProcAddress(hLibDbgHelp, "SymGetLineFromAddr64");
|
|
pSymFunctionTableAccess64 = (fpSymFunctionTableAccess64)::GetProcAddress(hLibDbgHelp, "SymFunctionTableAccess64");
|
|
pSymInitialize = (fpSymInitialize) ::GetProcAddress(hLibDbgHelp, "SymInitialize");
|
|
pUnDecorateSymbolName = (fpUnDecorateSymbolName)::GetProcAddress(hLibDbgHelp, "UnDecorateSymbolName");
|
|
return true;
|
|
}
|
|
|
|
|
|
void printCallstack(FILE* outputFile, PEXCEPTION_POINTERS ex)
|
|
{
|
|
if (!loadDbgHelp())
|
|
return;
|
|
const HANDLE hProcess = GetCurrentProcess();
|
|
const HANDLE hThread = GetCurrentThread();
|
|
pSymInitialize(
|
|
hProcess,
|
|
nullptr,
|
|
TRUE
|
|
);
|
|
CONTEXT context = *(ex->ContextRecord);
|
|
STACKFRAME64 stack= {0};
|
|
#ifdef _M_IX86
|
|
stack.AddrPC.Offset = context.Eip;
|
|
stack.AddrPC.Mode = AddrModeFlat;
|
|
stack.AddrStack.Offset = context.Esp;
|
|
stack.AddrStack.Mode = AddrModeFlat;
|
|
stack.AddrFrame.Offset = context.Ebp;
|
|
stack.AddrFrame.Mode = AddrModeFlat;
|
|
#else
|
|
stack.AddrPC.Offset = context.Rip;
|
|
stack.AddrPC.Mode = AddrModeFlat;
|
|
stack.AddrStack.Offset = context.Rsp;
|
|
stack.AddrStack.Mode = AddrModeFlat;
|
|
stack.AddrFrame.Offset = context.Rsp;
|
|
stack.AddrFrame.Mode = AddrModeFlat;
|
|
#endif
|
|
IMAGEHLP_SYMBOL64_EXT symbol;
|
|
symbol.SizeOfStruct = sizeof(IMAGEHLP_SYMBOL64);
|
|
symbol.MaxNameLength = maxnamelength;
|
|
DWORD64 displacement = 0;
|
|
int beyond_main=-1; // emergency exit, see below
|
|
for (ULONG frame = 0; ; frame++) {
|
|
BOOL result = pStackWalk64
|
|
(
|
|
#ifdef _M_IX86
|
|
IMAGE_FILE_MACHINE_I386,
|
|
#else
|
|
IMAGE_FILE_MACHINE_AMD64,
|
|
#endif
|
|
hProcess,
|
|
hThread,
|
|
&stack,
|
|
&context,
|
|
nullptr,
|
|
pSymFunctionTableAccess64,
|
|
pSymGetModuleBase64,
|
|
nullptr
|
|
);
|
|
if (!result) // official end...
|
|
break;
|
|
pSymGetSymFromAddr64(hProcess, (ULONG64)stack.AddrPC.Offset, &displacement, &symbol);
|
|
TCHAR undname[maxnamelength]= {0};
|
|
pUnDecorateSymbolName((const TCHAR*)symbol.Name, (PTSTR)undname, (DWORD)getArrayLength(undname), UNDNAME_COMPLETE);
|
|
if (beyond_main>=0)
|
|
++beyond_main;
|
|
if (_tcscmp(undname, _T("main"))==0)
|
|
beyond_main=0;
|
|
fprintf(outputFile,
|
|
"%lu. 0x%08I64X in ",
|
|
frame, (ULONG64)stack.AddrPC.Offset);
|
|
fputs((const char *)undname, outputFile);
|
|
fputc('\n', outputFile);
|
|
if (0==stack.AddrReturn.Offset || beyond_main>2) // StackWalk64() sometimes doesn't reach any end...
|
|
break;
|
|
}
|
|
|
|
FreeLibrary(hLibDbgHelp);
|
|
hLibDbgHelp=nullptr;
|
|
}
|
|
|
|
void writeMemoryErrorDetails(FILE* outputFile, PEXCEPTION_POINTERS ex, const char* description)
|
|
{
|
|
fputs(description, outputFile);
|
|
fprintf(outputFile, " (instruction: 0x%p) ", ex->ExceptionRecord->ExceptionAddress);
|
|
// Using %p for ULONG_PTR later on, so it must have size identical to size of pointer
|
|
// This is not the universally portable solution but good enough for Win32/64
|
|
C_ASSERT(sizeof(void*) == sizeof(ex->ExceptionRecord->ExceptionInformation[1]));
|
|
switch (ex->ExceptionRecord->ExceptionInformation[0]) {
|
|
case 0:
|
|
fprintf(outputFile, "reading from 0x%p",
|
|
reinterpret_cast<void*>(ex->ExceptionRecord->ExceptionInformation[1]));
|
|
break;
|
|
case 1:
|
|
fprintf(outputFile, "writing to 0x%p",
|
|
reinterpret_cast<void*>(ex->ExceptionRecord->ExceptionInformation[1]));
|
|
break;
|
|
case 8:
|
|
fprintf(outputFile, "data execution prevention at 0x%p",
|
|
reinterpret_cast<void*>(ex->ExceptionRecord->ExceptionInformation[1]));
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Any evaluation of the exception needs to be done here!
|
|
*/
|
|
int filterException(int code, PEXCEPTION_POINTERS ex)
|
|
{
|
|
FILE *outputFile = stdout;
|
|
fputs("Internal error: ", outputFile);
|
|
switch (ex->ExceptionRecord->ExceptionCode) {
|
|
case EXCEPTION_ACCESS_VIOLATION:
|
|
writeMemoryErrorDetails(outputFile, ex, "Access violation");
|
|
break;
|
|
case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
|
|
fputs("Out of array bounds", outputFile);
|
|
break;
|
|
case EXCEPTION_BREAKPOINT:
|
|
fputs("Breakpoint", outputFile);
|
|
break;
|
|
case EXCEPTION_DATATYPE_MISALIGNMENT:
|
|
fputs("Misaligned data", outputFile);
|
|
break;
|
|
case EXCEPTION_FLT_DENORMAL_OPERAND:
|
|
fputs("Denormalized floating-point value", outputFile);
|
|
break;
|
|
case EXCEPTION_FLT_DIVIDE_BY_ZERO:
|
|
fputs("Floating-point divide-by-zero", outputFile);
|
|
break;
|
|
case EXCEPTION_FLT_INEXACT_RESULT:
|
|
fputs("Inexact floating-point value", outputFile);
|
|
break;
|
|
case EXCEPTION_FLT_INVALID_OPERATION:
|
|
fputs("Invalid floating-point operation", outputFile);
|
|
break;
|
|
case EXCEPTION_FLT_OVERFLOW:
|
|
fputs("Floating-point overflow", outputFile);
|
|
break;
|
|
case EXCEPTION_FLT_STACK_CHECK:
|
|
fputs("Floating-point stack overflow", outputFile);
|
|
break;
|
|
case EXCEPTION_FLT_UNDERFLOW:
|
|
fputs("Floating-point underflow", outputFile);
|
|
break;
|
|
case EXCEPTION_GUARD_PAGE:
|
|
fputs("Page-guard access", outputFile);
|
|
break;
|
|
case EXCEPTION_ILLEGAL_INSTRUCTION:
|
|
fputs("Illegal instruction", outputFile);
|
|
break;
|
|
case EXCEPTION_IN_PAGE_ERROR:
|
|
writeMemoryErrorDetails(outputFile, ex, "Invalid page access");
|
|
break;
|
|
case EXCEPTION_INT_DIVIDE_BY_ZERO:
|
|
fputs("Integer divide-by-zero", outputFile);
|
|
break;
|
|
case EXCEPTION_INT_OVERFLOW:
|
|
fputs("Integer overflow", outputFile);
|
|
break;
|
|
case EXCEPTION_INVALID_DISPOSITION:
|
|
fputs("Invalid exception dispatcher", outputFile);
|
|
break;
|
|
case EXCEPTION_INVALID_HANDLE:
|
|
fputs("Invalid handle", outputFile);
|
|
break;
|
|
case EXCEPTION_NONCONTINUABLE_EXCEPTION:
|
|
fputs("Non-continuable exception", outputFile);
|
|
break;
|
|
case EXCEPTION_PRIV_INSTRUCTION:
|
|
fputs("Invalid instruction", outputFile);
|
|
break;
|
|
case EXCEPTION_SINGLE_STEP:
|
|
fputs("Single instruction step", outputFile);
|
|
break;
|
|
case EXCEPTION_STACK_OVERFLOW:
|
|
fputs("Stack overflow", outputFile);
|
|
break;
|
|
default:
|
|
fprintf(outputFile, "Unknown exception (%d)\n",
|
|
code);
|
|
break;
|
|
}
|
|
fputc('\n', outputFile);
|
|
printCallstack(outputFile, ex);
|
|
fflush(outputFile);
|
|
return EXCEPTION_EXECUTE_HANDLER;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* Signal/SEH handling
|
|
* Has to be clean for using with SEH on windows, i.e. no construction of C++ object instances is allowed!
|
|
* TODO Check for multi-threading issues!
|
|
*
|
|
*/
|
|
int CppCheckExecutor::check_wrapper(CppCheck& cppcheck, int argc, const char* const argv[])
|
|
{
|
|
#ifdef USE_WINDOWS_SEH
|
|
FILE *outputFile = stdout;
|
|
__try {
|
|
return check_internal(cppcheck, argc, argv);
|
|
} __except (filterException(GetExceptionCode(), GetExceptionInformation())) {
|
|
// reporting to stdout may not be helpful within a GUI application...
|
|
fputs("Please report this to the cppcheck developers!\n", outputFile);
|
|
return -1;
|
|
}
|
|
#elif defined(USE_UNIX_SIGNAL_HANDLING)
|
|
// determine stack vs. heap
|
|
char stackVariable;
|
|
char *heapVariable=(char*)malloc(1);
|
|
bStackBelowHeap = &stackVariable < heapVariable;
|
|
free(heapVariable);
|
|
|
|
// set up alternative stack for signal handler
|
|
stack_t segv_stack;
|
|
segv_stack.ss_sp = mytstack;
|
|
segv_stack.ss_flags = 0;
|
|
segv_stack.ss_size = MYSTACKSIZE;
|
|
sigaltstack(&segv_stack, nullptr);
|
|
|
|
// install signal handler
|
|
struct sigaction act;
|
|
memset(&act, 0, sizeof(act));
|
|
act.sa_flags=SA_SIGINFO|SA_ONSTACK;
|
|
act.sa_sigaction=CppcheckSignalHandler;
|
|
for (std::map<int, std::string>::const_iterator sig=listofsignals.begin(); sig!=listofsignals.end(); ++sig) {
|
|
sigaction(sig->first, &act, nullptr);
|
|
}
|
|
return check_internal(cppcheck, argc, argv);
|
|
#else
|
|
return check_internal(cppcheck, argc, argv);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* That is a method which gets called from check_wrapper
|
|
* */
|
|
int CppCheckExecutor::check_internal(CppCheck& cppcheck, int /*argc*/, const char* const argv[])
|
|
{
|
|
Settings& settings = cppcheck.settings();
|
|
mSettings = &settings;
|
|
const bool std = tryLoadLibrary(settings.library, argv[0], "std.cfg");
|
|
|
|
for (const std::string &lib : settings.libraries) {
|
|
if (!tryLoadLibrary(settings.library, argv[0], lib.c_str())) {
|
|
const std::string msg("Failed to load the library " + lib);
|
|
const std::list<ErrorLogger::ErrorMessage::FileLocation> callstack;
|
|
ErrorLogger::ErrorMessage errmsg(callstack, emptyString, Severity::information, msg, "failedToLoadCfg", false);
|
|
reportErr(errmsg);
|
|
return EXIT_FAILURE;
|
|
}
|
|
}
|
|
|
|
bool posix = true;
|
|
if (settings.posix())
|
|
posix = tryLoadLibrary(settings.library, argv[0], "posix.cfg");
|
|
bool windows = true;
|
|
if (settings.isWindowsPlatform())
|
|
windows = tryLoadLibrary(settings.library, argv[0], "windows.cfg");
|
|
|
|
if (!std || !posix || !windows) {
|
|
const std::list<ErrorLogger::ErrorMessage::FileLocation> callstack;
|
|
const std::string msg("Failed to load " + std::string(!std ? "std.cfg" : !posix ? "posix.cfg" : "windows.cfg") + ". Your Cppcheck installation is broken, please re-install.");
|
|
#ifdef FILESDIR
|
|
const std::string details("The Cppcheck binary was compiled with FILESDIR set to \""
|
|
FILESDIR "\" and will therefore search for "
|
|
"std.cfg in " FILESDIR "/cfg.");
|
|
#else
|
|
const std::string cfgfolder(Path::fromNativeSeparators(Path::getPathFromFilename(argv[0])) + "cfg");
|
|
const std::string details("The Cppcheck binary was compiled without FILESDIR set. Either the "
|
|
"std.cfg should be available in " + cfgfolder + " or the FILESDIR "
|
|
"should be configured.");
|
|
#endif
|
|
ErrorLogger::ErrorMessage errmsg(callstack, emptyString, Severity::information, msg+" "+details, "failedToLoadCfg", false);
|
|
reportErr(errmsg);
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
if (settings.reportProgress)
|
|
mLatestProgressOutputTime = std::time(nullptr);
|
|
|
|
if (!settings.outputFile.empty()) {
|
|
mErrorOutput = new std::ofstream(settings.outputFile);
|
|
}
|
|
|
|
if (settings.xml) {
|
|
reportErr(ErrorLogger::ErrorMessage::getXMLHeader());
|
|
}
|
|
|
|
if (!settings.buildDir.empty()) {
|
|
std::list<std::string> fileNames;
|
|
for (std::map<std::string, std::size_t>::const_iterator i = mFiles.begin(); i != mFiles.end(); ++i)
|
|
fileNames.push_back(i->first);
|
|
AnalyzerInformation::writeFilesTxt(settings.buildDir, fileNames, settings.project.fileSettings);
|
|
}
|
|
|
|
unsigned int returnValue = 0;
|
|
if (settings.jobs == 1) {
|
|
// Single process
|
|
settings.jointSuppressionReport = true;
|
|
|
|
std::size_t totalfilesize = 0;
|
|
for (std::map<std::string, std::size_t>::const_iterator i = mFiles.begin(); i != mFiles.end(); ++i) {
|
|
totalfilesize += i->second;
|
|
}
|
|
|
|
std::size_t processedsize = 0;
|
|
unsigned int c = 0;
|
|
if (settings.project.fileSettings.empty()) {
|
|
for (std::map<std::string, std::size_t>::const_iterator i = mFiles.begin(); i != mFiles.end(); ++i) {
|
|
if (!mSettings->library.markupFile(i->first)
|
|
|| !mSettings->library.processMarkupAfterCode(i->first)) {
|
|
returnValue += cppcheck.check(i->first);
|
|
processedsize += i->second;
|
|
if (!settings.quiet)
|
|
reportStatus(c + 1, mFiles.size(), processedsize, totalfilesize);
|
|
c++;
|
|
}
|
|
}
|
|
} else {
|
|
|
|
// filesettings
|
|
c = 0;
|
|
for (const ImportProject::FileSettings &fs : settings.project.fileSettings) {
|
|
returnValue += cppcheck.check(fs);
|
|
++c;
|
|
if (!settings.quiet)
|
|
reportStatus(c, settings.project.fileSettings.size(), c, settings.project.fileSettings.size());
|
|
}
|
|
}
|
|
|
|
// second loop to parse all markup files which may not work until all
|
|
// c/cpp files have been parsed and checked
|
|
for (std::map<std::string, std::size_t>::const_iterator i = mFiles.begin(); i != mFiles.end(); ++i) {
|
|
if (mSettings->library.markupFile(i->first) && mSettings->library.processMarkupAfterCode(i->first)) {
|
|
returnValue += cppcheck.check(i->first);
|
|
processedsize += i->second;
|
|
if (!settings.quiet)
|
|
reportStatus(c + 1, mFiles.size(), processedsize, totalfilesize);
|
|
c++;
|
|
}
|
|
}
|
|
if (cppcheck.analyseWholeProgram())
|
|
returnValue++;
|
|
} else if (!ThreadExecutor::isEnabled()) {
|
|
std::cout << "No thread support yet implemented for this platform." << std::endl;
|
|
} else {
|
|
// Multiple processes
|
|
ThreadExecutor executor(mFiles, settings, *this);
|
|
returnValue = executor.check();
|
|
}
|
|
|
|
cppcheck.analyseWholeProgram(mSettings->buildDir, mFiles);
|
|
|
|
if (settings.isEnabled(Settings::INFORMATION) || settings.checkConfiguration) {
|
|
const bool enableUnusedFunctionCheck = cppcheck.isUnusedFunctionCheckEnabled();
|
|
|
|
if (settings.jointSuppressionReport) {
|
|
for (std::map<std::string, std::size_t>::const_iterator i = mFiles.begin(); i != mFiles.end(); ++i) {
|
|
const bool err = reportUnmatchedSuppressions(settings.nomsg.getUnmatchedLocalSuppressions(i->first, enableUnusedFunctionCheck));
|
|
if (err && returnValue == 0)
|
|
returnValue = settings.exitCode;
|
|
}
|
|
}
|
|
|
|
const bool err = reportUnmatchedSuppressions(settings.nomsg.getUnmatchedGlobalSuppressions(enableUnusedFunctionCheck));
|
|
if (err && returnValue == 0)
|
|
returnValue = settings.exitCode;
|
|
}
|
|
|
|
if (!settings.checkConfiguration) {
|
|
cppcheck.tooManyConfigsError("",0U);
|
|
|
|
if (settings.isEnabled(Settings::MISSING_INCLUDE) && (Preprocessor::missingIncludeFlag || Preprocessor::missingSystemIncludeFlag)) {
|
|
const std::list<ErrorLogger::ErrorMessage::FileLocation> callStack;
|
|
ErrorLogger::ErrorMessage msg(callStack,
|
|
emptyString,
|
|
Severity::information,
|
|
"Cppcheck cannot find all the include files (use --check-config for details)\n"
|
|
"Cppcheck cannot find all the include files. Cppcheck can check the code without the "
|
|
"include files found. But the results will probably be more accurate if all the include "
|
|
"files are found. Please check your project's include directories and add all of them "
|
|
"as include directories for Cppcheck. To see what files Cppcheck cannot find use "
|
|
"--check-config.",
|
|
Preprocessor::missingIncludeFlag ? "missingInclude" : "missingIncludeSystem",
|
|
false);
|
|
reportInfo(msg);
|
|
}
|
|
}
|
|
|
|
if (settings.xml) {
|
|
reportErr(ErrorLogger::ErrorMessage::getXMLFooter());
|
|
}
|
|
|
|
mSettings = nullptr;
|
|
if (returnValue)
|
|
return settings.exitCode;
|
|
return 0;
|
|
}
|
|
|
|
#ifdef _WIN32
|
|
// fix trac ticket #439 'Cppcheck reports wrong filename for filenames containing 8-bit ASCII'
|
|
static inline std::string ansiToOEM(const std::string &msg, bool doConvert)
|
|
{
|
|
if (doConvert) {
|
|
const unsigned msglength = msg.length();
|
|
// convert ANSI strings to OEM strings in two steps
|
|
std::vector<WCHAR> wcContainer(msglength);
|
|
std::string result(msglength, '\0');
|
|
|
|
// ansi code page characters to wide characters
|
|
MultiByteToWideChar(CP_ACP, 0, msg.data(), msglength, wcContainer.data(), msglength);
|
|
// wide characters to oem codepage characters
|
|
WideCharToMultiByte(CP_OEMCP, 0, wcContainer.data(), msglength, const_cast<char *>(result.data()), msglength, nullptr, nullptr);
|
|
|
|
return result; // hope for return value optimization
|
|
}
|
|
return msg;
|
|
}
|
|
#else
|
|
// no performance regression on non-windows systems
|
|
#define ansiToOEM(msg, doConvert) (msg)
|
|
#endif
|
|
|
|
void CppCheckExecutor::reportErr(const std::string &errmsg)
|
|
{
|
|
// Alert only about unique errors
|
|
if (mShownErrors.find(errmsg) != mShownErrors.end())
|
|
return;
|
|
|
|
mShownErrors.insert(errmsg);
|
|
if (mErrorOutput)
|
|
*mErrorOutput << errmsg << std::endl;
|
|
else {
|
|
std::cerr << ansiToOEM(errmsg, (mSettings == nullptr) ? true : !mSettings->xml) << std::endl;
|
|
}
|
|
}
|
|
|
|
void CppCheckExecutor::reportOut(const std::string &outmsg)
|
|
{
|
|
std::cout << ansiToOEM(outmsg, true) << std::endl;
|
|
}
|
|
|
|
void CppCheckExecutor::reportProgress(const std::string &filename, const char stage[], const std::size_t value)
|
|
{
|
|
(void)filename;
|
|
|
|
if (!mLatestProgressOutputTime)
|
|
return;
|
|
|
|
// Report progress messages every 10 seconds
|
|
const std::time_t currentTime = std::time(nullptr);
|
|
if (currentTime >= (mLatestProgressOutputTime + 10)) {
|
|
mLatestProgressOutputTime = currentTime;
|
|
|
|
// format a progress message
|
|
std::ostringstream ostr;
|
|
ostr << "progress: "
|
|
<< stage
|
|
<< ' ' << value << '%';
|
|
|
|
// Report progress message
|
|
reportOut(ostr.str());
|
|
}
|
|
}
|
|
|
|
void CppCheckExecutor::reportInfo(const ErrorLogger::ErrorMessage &msg)
|
|
{
|
|
reportErr(msg);
|
|
}
|
|
|
|
void CppCheckExecutor::reportStatus(std::size_t fileindex, std::size_t filecount, std::size_t sizedone, std::size_t sizetotal)
|
|
{
|
|
if (filecount > 1) {
|
|
std::ostringstream oss;
|
|
const long percentDone = (sizetotal > 0) ? static_cast<long>(static_cast<long double>(sizedone) / sizetotal * 100) : 0;
|
|
oss << fileindex << '/' << filecount
|
|
<< " files checked " << percentDone
|
|
<< "% done";
|
|
std::cout << oss.str() << std::endl;
|
|
}
|
|
}
|
|
|
|
void CppCheckExecutor::reportErr(const ErrorLogger::ErrorMessage &msg)
|
|
{
|
|
if (mShowAllErrors) {
|
|
reportOut(msg.toXML());
|
|
} else if (mSettings->xml) {
|
|
reportErr(msg.toXML());
|
|
} else {
|
|
reportErr(msg.toString(mSettings->verbose, mSettings->templateFormat, mSettings->templateLocation));
|
|
}
|
|
}
|
|
|
|
void CppCheckExecutor::setExceptionOutput(FILE* exceptionOutput)
|
|
{
|
|
mExceptionOutput = exceptionOutput;
|
|
}
|
|
|
|
FILE* CppCheckExecutor::getExceptionOutput()
|
|
{
|
|
return mExceptionOutput;
|
|
}
|
|
|
|
bool CppCheckExecutor::tryLoadLibrary(Library& destination, const char* basepath, const char* filename)
|
|
{
|
|
const Library::Error err = destination.load(basepath, filename);
|
|
|
|
if (err.errorcode == Library::UNKNOWN_ELEMENT)
|
|
std::cout << "cppcheck: Found unknown elements in configuration file '" << filename << "': " << err.reason << std::endl;
|
|
else if (err.errorcode != Library::OK) {
|
|
std::string errmsg;
|
|
switch (err.errorcode) {
|
|
case Library::OK:
|
|
break;
|
|
case Library::FILE_NOT_FOUND:
|
|
errmsg = "File not found";
|
|
break;
|
|
case Library::BAD_XML:
|
|
errmsg = "Bad XML";
|
|
break;
|
|
case Library::UNKNOWN_ELEMENT:
|
|
errmsg = "Unexpected element";
|
|
break;
|
|
case Library::MISSING_ATTRIBUTE:
|
|
errmsg = "Missing attribute";
|
|
break;
|
|
case Library::BAD_ATTRIBUTE_VALUE:
|
|
errmsg = "Bad attribute value";
|
|
break;
|
|
case Library::UNSUPPORTED_FORMAT:
|
|
errmsg = "File is of unsupported format version";
|
|
break;
|
|
case Library::DUPLICATE_PLATFORM_TYPE:
|
|
errmsg = "Duplicate platform type";
|
|
break;
|
|
case Library::PLATFORM_TYPE_REDEFINED:
|
|
errmsg = "Platform type redefined";
|
|
break;
|
|
}
|
|
if (!err.reason.empty())
|
|
errmsg += " '" + err.reason + "'";
|
|
std::cout << "cppcheck: Failed to load library configuration file '" << filename << "'. " << errmsg << std::endl;
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|